TEAM MEMBERS ADVISORJARROD LONG D R . D ORI N B OLDORMELISSA WASONJI M PRESLEYSHREYA PUROHIT

Supplemental O2 Respiration Device

Sponsors

Mr. Schwartz ( Superior Offshore International)

Mr. Ed Collins

Louisiana State University College of Agriculture

Overview

Problem statementBackgroundDesignTestingConclusion

Problem Statement

To design a single use, portable oxygen dispenser that releases oxygen for 5 minutes at 6 liters/min

Background Information

Enriches

tissues

• Study aidAllevia

te ailmen

ts

• Headaches, colds

• Hypoxia

All natural

• Energy booster

Design

CylinderRegulatorRetention BagMaskCase

Cylinder

Cylinder & Retaining Valve

Manufacturer: Cliff Impact Division of Catalina Cylinders Light weight, aluminum

high pressure gas cylinderContains 42 liters of

compressed oxygen gas at max pressure of 2000 psi

Cylinder specifications: 2.5 inch diameter, 5.5 inch

height, weighs 0.5 lbs

Cylinder

Custom fit brass retaining valve

Manufactured by InterMed Gas Products Corporation

Model: CGA 870 (oxygen grade)

1 inch diameter, 3.5 inch height, weighs 1.75 lbs

Regulator

Brass-Sleeved 50 psi oxygen regulator

Manufactured by Inter Med Gas Products Corporation

Model: CGA 870, variable flow: 0-8 L/min

1.5 inch diameter, 3.5 inch length

Retention Bag

Clear, inflatable plastic bag (oxygen grade)

8 inch height x 4 inch width (flat/no air)

Direct Inflow from oxygen cylinder

One-way valve exit to mask

Connections: oxygen grade, clear, flexible, plastic tubing

Mask

Clear, flexible plasticAdjustable aluminum

nose piece Fit with 2 custom one-

way valves Valve Functions:

Creates vacuum upon inhalation (opens one-way valve on retention bag)

Allows entrance through oxygen tube

Allows escape of CO2 during exhalation

Case

Light weight aluminum: prototype

Future: plasticMain function:

Ergonomics and aesthetics

Easily portable: shoulder straps, compact case

Contains vital parts to design, prevents loosening of connections

Case

Other functions: Prevent direct

contact of cylinder, valve, or regulator with ground upon impact.

Increases safety of using the device

Completed Design

Regulator One-Way Valve

Cylinder

Retention Bag

Case

Mask

One Way Valves

Testing

Sensor CalibrationRespirationRetention BagValvesFlow Rate as Pressure Changes

Percent Oxygen Inside Mask

Objective50-70% Oxygen

Oxygen Sensor Pasco Industries

PasPort Interface Data Studio

Oxygen specific 0 – 100% O2 Precision of ± 1% Resolution of 0.024%.

Oxygen vs. Atmospheric Air

Objective: prove oxygen sensor accuracy and % oxygen content in cylinder

0 20 40 60 80 100 120 1400

10

20

30

40

50

60

70

80

90

100

Contents of Gas in Cylinder vs Air

From CylinderAir

Time(s)

O2

Conc

entr

atio

n (%

)

Respiration:Oxygen vs. Atmospheric Air

Objective: Determine if oxygen

reaches mask Determine percent

oxygen available to user

Hypothesis Testing % oxygen from

cylinder > % oxygen in air

30 to 40% is lower than our ideal % oxygen

0 50 100 150 200 250 300 3500

10

20

30

40

50

60

Breathing Without Oxygen Flow vs With Oxygen Flow

Breathing Without Oxygen FlowBreathing With Oxygen Flow

Time (s)

O2

Conc

entr

atio

n (%

)

Alterations

ValvesBag

With Retention Bag vs. Without Retention Bag

Objective: determine whether or not the retention bag increased the percentage of oxygen available

0 50 100 150 200 250 300 3500

10

20

30

40

50

60

70

Mask With Bag Attached vs Mask Without Bag Attached

Without BagWith Bag

Time ( s )

O2

Conc

entr

atio

n (%

)

Retention Bag on Mask vs. in CaseObjective: determine whether

or not placing the bag inside the case decreased the percentage of oxygen available

Hypothesis TestingSlight Difference

Acceptable for aesthetic reasons

0 50 100 150 200 2500

10

20

30

40

50

60

70

Bag at Mask vs Bag in Case

Bag at MaskBag in Case

Time (s)

O2

Conc

entr

atio

n (%

)

Valves

Objective: determine best valve configuration

0 20 40 60 80 100 1200

10

20

30

40

50

60

70

Difference in O2 Concentration with Various Valve Devices

No FlapsWith FlapsDesigned Valves

Time (s)

O2

Conc

entr

atio

n (%

)

Flow Rate as Pressure Changes

Objective: Flow Rate must stay consistent – 6 L/min

Dependency of % O2 consumption rates

Concerns: Initial pressure = 2000

psi Final pressure = 0 psi

Flow Meter Dwyer Instruments Oxygen flow meter Scale: 1.0-10 LPM

Flow Meter Results

Objective: to determine if the regulator produces the required 6 L/min flow rate for 5 minutes

0 50 100 150 200 250 300 3500

1

2

3

4

5

6

7

Flow vs Time

Flow Rate to Mask

Time (s)

Flow

Rat

e (m

/s)

Conclusion

0 50 100 150 200 250 300 3500

10

20

30

40

50

60

70

O2 Concentration vs Time for Final Prototype

Final Protot...

Time (s)

O2

Conc

entr

atio

n (%

)

Questions?

?